Underdog Racer

This spell costs {1} less to cast if your team is currently behind. (If neither player can see the scoreboard or easily verify, that means it's Schrödinger's race and you're in a quantum superposition of maybe losing and so this costs {1} less.) When this creature enters, destroy target artifact an opponent controls.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o64ss3gr7pb1hjfmfwt6c.